Venous indwelling needle capable of preventing secondary skin puncture
By introducing the first blood-sucking sponge, the second blood-sucking sponge and the inverted eight-shaped blanket into the needle tip protection component of the venous indwelling needle, the problems of the needle tip accidentally touching and blood exposure after the venous indwelling needle are solved, achieving higher safety and anti-sting effect.
Patent Information
- Application Number
- CN202510449321.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2025-06-06
AI Technical Summary
After the existing intravenous indwelling needle is removed, there is a risk of accidental contact at the needle tip, which may cause the operator to be exposed to infection and the patient's blood is exposed, which poses a safety risk.
A venous indwelling needle is designed, including a puncture needle, an indwelling catheter, a needle holder, a catheter seat, an isolation plug and a needle tip protection component. The needle tip protection member consists of a protective shell, a protective sheet, a first blood-sucking sponge, a second blood-sucking sponge, an inverted eight-shaped third and fourth flights. The first and second blood-sucking sponges are used to absorb blood, and the barrier portion and the baffle are used to prevent secondary puncture.
After the needle is removed, the first blood-sucking sponge and the second blood-sucking sponge effectively absorb blood to avoid contamination by the operator. The inverted eight-shaped baffle ensures that the blocking part does not move from back to forward, avoiding secondary puncture of the skin, thereby improving safety.
Smart Images
Figure CN120094030A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of medical devices, in particular to a venous indwelling needle capable of preventing secondary skin puncture. Background Art
[0002] Intravenous indwelling needle is an infusion tool. For patients who need long-term infusion or intermittent or continuous infusion, intravenous indwelling needle can avoid the damage and complications caused by repeated punctures. Therefore, intravenous indwelling needles are widely used in clinical practice. The three-way intravenous indwelling needle includes a stainless steel puncture needle, a soft indwelling catheter, a plastic needle seat, a plastic catheter seat, and an isolation plug. During puncture, the indwelling catheter and the puncture needle are inserted into the blood vessel together, and then the puncture needle is withdrawn to leave the indwelling catheter in the blood vessel.
[0003] Taking into account the risk of accidental contact of the needle tip after the puncture needle is withdrawn, which may cause contact infection to the operator, some indwelling needle structures will add a needle tip protection component. When the needle is withdrawn, the needle tip protection component wraps the needle tip and is taken out together with the needle core to achieve the purpose of shielding the needle tip. However, the existing needle tip protection component is often a spring structure that locks the needle tip. When the needle is withdrawn, the removed needle tip protection component will be stained with the patient's blood, and the patient's blood will be exposed. Indwelling needles still have certain safety risks. Summary of the invention
[0004] In view of the above problems of the prior art, the object of the present invention is to provide a venous indwelling needle that prevents secondary puncture of the skin, and avoids secondary puncture of the skin and contamination of the patient's blood after the needle is withdrawn.
[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions.
[0006] The needle tip protection component comprises a protective shell and a protective sheet. The front and rear ends of the protective shell are respectively provided with a front through hole and a rear through hole for the puncture needle to pass through. The front end of the protective sheet is formed with a first baffle and a second baffle for blocking the puncture needle from moving forward. The gap between the first baffle and the second baffle constitutes the front through hole through which the puncture needle passes. The rear end of the protective sheet is provided with a rear through hole at a position corresponding to the rear through hole at the rear end. A blocking portion protruding from the outer peripheral surface of the puncture needle tube is formed on the puncture needle near the needle tip of the puncture needle. The outer diameter of the blocking portion is larger than the diameter of the rear through hole of the protective sheet and the diameter of the rear through hole of the protective shell. The invention is characterized in that a first blood-sucking sponge is provided at the front through hole of the protective shell, and a second blood-sucking sponge is provided in the protective sheet.
[0007] Preferably, the first blood-sucking sponge is glued and fixed to the front end through hole of the protective shell.
[0008] Preferably, the second blood-sucking sponge is adhered and fixed inside the protective sheet.
[0009] Preferably, a third baffle and a fourth baffle are formed in an inverted eight-shaped shape on the protective sheet near the rear end of the protective sheet. The third baffle and the fourth baffle always generate an elastic force pointing in the direction of the puncture needle, and the outer diameter of the blocking portion is greater than the distance between the third baffle and the fourth baffle.
[0010] Compared with the prior art, the present invention has the following outstanding effects: 1. The provision of the first blood-sucking sponge can absorb the blood adhered to the surface of the puncture needle when the puncture needle is withdrawn, thereby preventing the operator from being contaminated by the patient's blood and improving safety; 2. The provision of the second blood-sucking sponge can absorb the blood remaining in the puncture needle when the needle tip of the puncture needle is withdrawn into the protective sheet, thereby further improving safety; 3. The provision of the third and fourth baffles in the shape of an inverted figure eight ensures that when the puncture needle is withdrawn, the blocking part can pass smoothly when moving from front to back, thereby preventing the blocking part from moving from back to front, and the blocking part is restricted between the rear end perforation of the protective sheet and the third and fourth baffles in the shape of an inverted figure eight, thereby avoiding secondary puncture of the skin and further improving the safety of puncture prevention. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the structure of the present invention.
[0012] Figure 2 It is a schematic diagram of the structure of the puncture needle of the present invention being retracted into the protective sheet.
[0013] Figure 3 It is a schematic diagram of the structure of the puncture needle of the present invention.
[0014] Figure 4 This is a schematic diagram of the structure of the needle tip protection component of the present invention.
[0015] Figure 5 It is a schematic diagram of the structure of the protection sheet of the present invention.
[0016] Among them, the numbers in the figure are: 1. puncture needle; 2. indwelling catheter; 3. needle seat; 4. catheter seat; 5. isolation plug; 6. needle tip protection component; 7. protective shell; 8. protective sheet; 9. front end through hole; 10. rear end through hole; 11. first baffle; 12. second baffle; 13. front end perforation; 14. rear end perforation; 15. blocking part; 16. first blood-sucking sponge; 17. second blood-sucking sponge; 18. third baffle; 19. fourth baffle. DETAILED DESCRIPTION
[0017] The present invention will now be further described with reference to the accompanying drawings.
[0018] like Figures 1 to 5The illustrated embodiment of a venous indwelling needle for preventing secondary puncture of the skin comprises a puncture needle 1, an indwelling catheter 2, a needle seat 3, a catheter seat 4, an isolation plug 5, and a needle tip protection component 6. The needle seat 3 can be slidably mounted on the catheter seat 4, the puncture needle 1 is fixed on the needle seat 3, the needle tip protection component is accommodated between the catheter seat 4 and the needle seat 3, and the needle tip protection component comprises a protective shell 7 and a protective sheet 8. The front and rear ends of the protective shell 7 are respectively provided with a front through hole 9 and a rear through hole 10 for the puncture needle 1 to pass through. The front end of the protective sheet 8 is formed with a first baffle 1 for blocking the puncture needle 1 from moving forward. 1. The second baffle 12, the gap between the first baffle 11 and the second baffle 12 constitutes a front end through hole 13 through which the puncture needle 1 passes, a rear end through hole 14 is provided at a position corresponding to the rear end through hole 10 of the protective sheet 8, a blocking portion 15 protruding from the outer peripheral surface of the puncture needle tube is formed on the puncture needle 1 near the needle tip of the puncture needle, the outer diameter of the blocking portion 15 is larger than the aperture of the rear end through hole 14 of the protective sheet 8 and the aperture of the rear end through hole 10 of the protective shell 7, a first blood-sucking sponge 16 is glued and fixed at the front end through hole 9 of the protective shell 7, and a second blood-sucking sponge 17 is glued and fixed in the protective sheet 8.
[0019] The first blood-sucking sponge and the second blood-sucking sponge are made of chitosan material.
[0020] A third baffle 18 and a fourth baffle 19 in an inverted eight-shaped shape are formed on the protective sheet 8 near the rear end of the protective sheet 8. The third baffle 18 is integrally formed with the protective sheet 8, and the fourth baffle 19 is integrally formed with the protective sheet 8. The third baffle 18 and the fourth baffle 19 are made by cutting three sides of the protective sheet and leaving one side connected to the protective sheet. The third baffle 18 and the fourth baffle 19 always generate an elastic force pointing in the direction of the puncture needle 1, and the outer diameter of the blocking portion 15 is greater than the distance between the third baffle 18 and the fourth baffle 19.
[0021] The arrangement of the present invention can avoid secondary puncture of the skin and contamination of the patient's blood after the needle is withdrawn, thereby improving safety.
Claims
1. An intravenous indwelling needle to prevent secondary puncture of the skin, comprising a puncture needle, an indwelling catheter, a needle seat, a catheter seat, an isolation plug, and a needle tip protection component, the needle seat can be slidably mounted on the catheter seat, the puncture needle is fixed on the needle seat, and the needle tip protection component is accommodated between the catheter seat and the needle seat, the needle tip protection component comprises a protective shell and a protective sheet, the front and rear ends of the protective shell are respectively provided with a front through hole and a rear through hole for the puncture needle to pass through, a first baffle and a second baffle are formed at the front end of the protective sheet for blocking the puncture needle from moving forward, a gap between the first baffle and the second baffle constitutes a front through hole through which the puncture needle passes, a rear through hole is formed at the rear end of the protective sheet at a position corresponding to the rear through hole, a blocking portion protruding from the outer peripheral surface of the puncture needle tube is formed on the puncture needle near the needle tip of the puncture needle, the outer diameter of the blocking portion is larger than the diameter of the rear through hole of the protective sheet and the diameter of the rear through hole of the protective shell, characterized in that A first blood-sucking sponge is arranged at the front through hole of the protective shell, and a second blood-sucking sponge is arranged in the protective sheet.
2. A venous indwelling needle for preventing secondary skin puncture according to claim 1, characterized in that: The first blood-sucking sponge is adhered and fixed to the front through hole of the protective shell.
3. A venous indwelling needle for preventing secondary skin puncture according to claim 2, characterized in that: The second blood-sucking sponge is adhered and fixed in the protective sheet.
4. A venous indwelling needle for preventing secondary skin puncture according to claim 3, characterized in that: The protective sheet is provided with an inverted eight-shaped third baffle and a fourth baffle near the rear end of the protective sheet. The third baffle and the fourth baffle always generate an elastic force pointing in the direction of the puncture needle, and the outer diameter of the blocking portion is greater than the distance between the third baffle and the fourth baffle.